Day1 1단계 20231018

10. 2588번 곱셈

• Scanner 대신 BufferedReader/Writer를 사용한 빠른 입출력
  • 별 찍기에 해당 예제 존재함
  • https://st-lab.tistory.com/18
  • StringTokenizer도 함께 체크하기

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int firstNum = scan.nextInt();
        int SecondNum = scan.nextInt(); 
        
        int num01 = SecondNum/100;
        int num02 = SecondNum/10-num01*10;
        int num03 = SecondNum%10;
        
        int firstCalc = firstNum*num03;
        int secCalc = firstNum*num02;
        int thirdCalc = firstNum*num01;
        
        System.out.println(firstCalc);
        System.out.println(secCalc);
        System.out.println(thirdCalc);
        System.out.println(firstCalc+secCalc*10+thirdCalc*100);
	}
}